1 | package net.sabi.pester;
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2 |
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3 | import java.util.Comparator;
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4 | import danger.app.Application;
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5 | import danger.app.DataStore;
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6 | import danger.app.Event;
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7 | import danger.app.SettingsDB;
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8 | import danger.app.SettingsDBException;
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9 | import danger.internal.Date;
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10 | import danger.util.StdActiveList;
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11 | import danger.util.DEBUG;
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12 |
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13 | public class Alarms extends StdActiveList {
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14 | // max # records in a datastore
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15 | private static final int MAX_ALARM_COUNT = 50;
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16 |
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17 | private static Alarms sAlarmList = null;
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18 | private static Listener sListener;
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19 | private static SettingsDB sSettingsDB;
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20 |
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21 | private DataStore mDataStore;
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22 |
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23 | private Alarms() {
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24 | mDataStore = DataStore.createDataStore("alarms", true /* auto sync */);
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25 | // register us for Event.EVENT_DATASTORE_RESTORED, which only
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26 | // seems to be documented at:
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27 | // <http://developer.danger.com/forum/index.php?t=msg&th=27>
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28 | mDataStore.setAutoSyncNotifyee(sListener);
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29 | refreshFromDataStore(false);
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30 | }
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31 |
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32 | void refreshFromDataStore(boolean datastoreRestored) {
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33 | sAlarmList = null;
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34 | removeAllItems();
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35 | if (datastoreRestored)
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36 | mDataStore.doneResolvingConflict(); // resolves UID conflicts
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37 | byte[][] alarmsData = mDataStore.getRecords();
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38 | int i;
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39 | for (i = 0 ; i < alarmsData.length ; ++i) {
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40 | Alarm alarm = new Alarm();
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41 | alarm.fromByteArray(alarmsData[i]);
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42 | alarm.setUID(mDataStore.getRecordUID(i));
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43 | insertItemSorted(alarm, alarm);
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44 | alarm.resume();
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45 | }
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46 | sAlarmList = this;
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47 | }
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48 |
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49 | public static Alarms getList() {
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50 | if (sAlarmList == null) {
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51 | Application.registerForEvent(sListener, Event.EVENT_TIME_CHANGED);
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52 | sSettingsDB = new SettingsDB("settings", true /* auto sync */);
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53 | sListener = new Listener();
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54 | new Alarms();
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55 | }
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56 | return sAlarmList;
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57 | }
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58 |
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59 | public static void addAlarm(Alarm alarm) {
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60 | sAlarmList.insertItemSorted(alarm, alarm);
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61 | }
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62 | public static void removeAlarm(Alarm alarm) {
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63 | sAlarmList.removeItem(alarm);
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64 | }
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65 |
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66 | protected void onItemAdded(Object item, int index) {
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67 | if (sAlarmList == null) // restoring from service
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68 | return;
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69 | Alarm alarm = (Alarm)item;
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70 | DEBUG.p("adding: " + alarm +
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71 | " next UID: " + mDataStore.getAutoSyncNextUID());
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72 | index = mDataStore.addRecord(alarm.toByteArray());
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73 | alarm.setUID(mDataStore.getRecordUID(index));
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74 | DEBUG.p("added UID " + alarm.getUID() + " @ " + index);
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75 | }
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76 |
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77 | protected void onItemRemoved(Object item, int index) {
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78 | if (sAlarmList == null) // restoring from service (after hard reset)
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79 | return;
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80 | Alarm alarm = (Alarm)item;
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81 | int uid = alarm.getUID();
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82 | if (uid == 0)
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83 | return;
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84 | mDataStore.removeRecordByUID(uid);
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85 | }
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86 |
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87 | public void onItemUpdated(Object item, int index) {
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88 | if (sAlarmList == null) // restoring from service
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89 | return;
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90 | Alarm alarm = (Alarm)item;
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91 | mDataStore.setRecordDataByUID(alarm.getUID(), alarm.toByteArray(), true);
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92 | DEBUG.p("updated: " + alarm + " UID " + alarm.getUID());
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93 | }
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94 |
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95 | private static String KEY_DEFAULT_ALARM = "default alarm";
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96 |
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97 | public static Alarm getDefaultAlarm() {
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98 | Alarm defaultAlarm = new Alarm();
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99 | try {
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100 | defaultAlarm.fromByteArray(sSettingsDB.getBytes(KEY_DEFAULT_ALARM));
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101 | } catch (SettingsDBException e) {
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102 | defaultAlarm = new Alarm();
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103 | defaultAlarm.setDate(new Date());
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104 | defaultAlarm.setPeriod(600, false);
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105 | }
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106 | return defaultAlarm;
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107 | }
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108 | public static void setDefaultAlarm(Alarm alarm) {
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109 | sSettingsDB.setBytes(KEY_DEFAULT_ALARM, alarm.toByteArray());
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110 | }
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111 |
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112 | static class Listener extends danger.app.Listener
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113 | implements danger.util.ActiveList.ForEach {
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114 |
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115 | public void receive(Object item) {
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116 | ((Alarm)item).timeChanged();
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117 | }
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118 |
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119 | public boolean receiveEvent(Event e) {
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120 | if (e.type == Event.EVENT_TIME_CHANGED) {
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121 | Alarms.getList().forEach(this);
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122 | return true;
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123 | } else if (e.type == Event.EVENT_DATASTORE_RESTORED) {
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124 | String dbName = (String)e.argument;
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125 | DEBUG.p("DATASTORE_RESTORED: " + dbName);
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126 | if (!dbName.endsWith("alarms")) {
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127 | // because we only get/set the default alarm on demand
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128 | // there's no need to handle conflicts with the settings...
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129 | // XXX but what happens if we set a (default) alarm, then
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130 | // the SettingsDB restores?
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131 | Alarms.getList().refreshFromDataStore(true);
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132 | }
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133 | }
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134 | return super.receiveEvent(e);
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135 | }
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136 | }
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137 | }
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